Printing-telegraph apparatus.



C. L. KRUM.

PRlNTiNG TELEGRAPH APPARATUS.

APPLICAUON FILED FEB. 4, 19079. i

Patented Apr. 27, 1910.

5 sHE'ETs-sHEET1.

Lll@

0.1. KRUM. PRINTING TELEGRAPH APPARATUS.

APPLICATION FILED FEBQI, 1909.

5 SHEETS-SHEET 2.

C. l.. KRUM.

PRINTING TELEGRAPH APPARATUS.

APPLICATlON FILED FEB. 4, 1909.

' Patented Apr. 27, 1915.

5 SHEETS-SHEET 3.

@Fg/ML A C. L. KRUM. PRlNTING TELEGHAPH APPARATUS.

APPLICATION YILED FES- 4, 1909. Y V r Patented Ap?. 27, 191e.

C. L. KRUM PRINTING TELEGRAPH APPARATUS APPucATxoN FILED FEB. 4, 1909. E ,y Patented Apr. 2T, 1915.

`5 SHEETS-SHEET 5.

CHARLES L.,

non.

KEUM, 0F CHICAGQ, LLINOS, ASSIGNOR TO MGRKBUM CGTLANY, 0F

CHICAGG, ELLINGIS, A CRPORATION OF MAINE.

PBINTlNlG-TELEGRAPH APPARATUS.

Speccaton of Letters Eatent.

yatented Apr. 2'?, il.

Application filed February Il, ISGS. Serial No. 475,998.

To all trimm it may concern.'

Be it known that I, CHARLES L. KRUM, a citizen of the yUnited States, and a resident of Chicago, county oiCook, and State of Illinois, have invented certain new and useful improvements in Printings'lelegraph Apparatus, of which the following is a specification.

The invention seeks to provide a suitable printing mechanism which may be quickly and effectively operated* by a set of electrical devices, which in turn can be eontrollo-d and selectively actuated by signals transmitted from a. distant point.

The invention also seeks to provide in connection wit-li the printing mechanism a set of controlling keys, together with means actuated oy the keys for transmitting signais over the line.

further object of the invention is to provide aprinting telegraph apparatus -cli inay be employed either as a trans- -niitter or as a receiver and which, in either ease, will print a copy of the transmitted message.

'With these and other objects in view, the invention consists in the features of iinproveinent hereinafter set forth, illustrated in the accompanying drawings and more particularly pointed out in the appended claiins.- v

lie'invention is shown as applied to the ell-known Oliver typewriter, although 'itivill he understood Athat other forms ot' printing mechanism could be employed.

ln the drawings, Figure l is a view in longitudinal section through the combined transmitter and receiver', Fig. 2 is a detail elevation on an enlarged scale of the escapenient mechanism; Fig. 3 is an elevation oi' one of the special keys; Fig. 4 is a plan view of the base upon which the typewriter is mounted, together 'ith the parts carried by the hase traine; Fig. 5 is a detail section on the line. 5-5 of Fig. G is an inverted plan' view of the typewriter frame;

` i'fig. is a View in elevation of one side ot" the apparatus with a portion of the typewriter frame shown in section; Fig. 8 is a illustrating the carriage iced mechanism' and the line-space inschaiiism; Fig. S is a detail section onthc line L -'o of Fig. S; Fig. 9 is an enlarged view in elevation of the carriage feed and linespace mechanism, parts of the trame being shown in section; Figs. l0 and 1i are detail sections on the lines i0-10 and Iii-1l respectively of Figa.

The frame i0 of the Oliver typewriter is mounted upon a `rectangular base ianie li. This frame is supported at its rear end upon legs 12 and adjacent its forward end upon a transverse support or plate 13 which is provided with upturned ends ill secured to the lower edges of the sides of. the base frame ll. The typewriter' frame is connected at its rear edge to theY rear portion of the base frame 11 by a pair of hinges l5, so that the typewriter frame may be raised to adord access to the electrical controlling apparatus when desired.

The Uliveic typewriter illustrated is of well-known forni. lt is provided with a set of character keys or levers 16 that are pivoted at their rear ends to an upright 17 upon the typewriter frame. The forward ends of the keys extend through a comb bar 18 and their upturned forward ends are provided with nger-pieces i9 arranged in banks. U-springs 20 extend between the typewriter traine and the keys or levers i6 and normally hold them in elevated position. A set of U-shaped type-'oars 2l are pivoted upon upriglits Qi on opposite sides of the typewriter frame and are connected by links 23 to the separate keys i6. rlhe type onthese bars are arranged to strike upon the top of a paper supporting platen 24 when the corresponding keys are depressed. The platen 24 is rotatably mounted upon a carriage Q5. This carriage'is provided with rollers 26 that engage guiderods 2T and is longitudinally movable to elect the letter-space movement pf the platen and the paper carried thereby. Each of the type-bars is provided with three type, one of which is normally in positionrto strike at the printing point on the platen.v

By shifting the platen transversely either forwardly or backwardly roinnornial position, the other type on the typo-bars will be brought to the printing point by the depres-l this frame are mounted upon rockers 29 (see Fig. 7) and it is also provided with a cen trai,rearwardly-extending guide-rod that engagesa roller 31 carried by an upright 32 on the typewriter frame. A pair of stops 33, adjustably threaded upon the guide-rod 30 are arranged on opposite sides of an upright 3i and are adapted to engage the same to limit the back and forth shift of the frame 28-and paper' carriage mounted thereon. vThe shitting frame is connected by a forwardly extending link 35 to a rock-arm 3C on a shaft 37 that is journaled at the f0rward portion oi the type-writer traine. At one side, this shaft is provided with an upwardly projecting arm 38 which carries a roller 39 that is engaged by a pair of oppositely inclined slotted cams `l() upon a pair of shift-keys Lil (see Fig. 7). rl"hese shift keys are pivoted at their rear ends to an upright 42 on the typewriter frame and intermediate their ends are provided with lugs 43 which normally engage a pin or lug t4 on the Atransversely shiftable frame to hold it -in central position. lVhen either` key is depressed, this lug Llf3 is moved out of the path of the lug ill and the transversely movable frame and carriage mounted' thereon is moved either forwardly or backwardly. In the normal central position of the carriage, the lower case letters are printed. Then the carriage is moved rearwardly, capitals are printed and when the carriage is moved forwardly, gures and punctuation marks are printed.

The universal bar 45 extends beneath the keys or levers 6 in position to be operated thereby when any one of the keys is depressed. This universal har is carried upon the uptnrned, rear end of a frame 46 that is pivoted at its front end to lugs 4:7 on the typewriter frame. A spring-48 beneath the universal har holds it in normal uplifted position and this universal bar and frame operatesY the ribbon shift t9 and the ribbon feed shaft 50 in the usual manner. A frame 51. is pivoted at its rear vend to lugs 52 on the typewriter frame and at its forward end is provided lwith upwardly-extending posts which carry a space bar 54e. This frame is upheld by a spring 51a and is connected to the universal frame to operate the saine by a hook 55.V

The parts thus far described are similar to those of the ordinary Oliver typewriter and need not be more fully set forth in this specilication. i

Each of the keys and the type-bars connected thereto arranged to he operated by a common actuator' in the forni of a transi'erse. universal oar This bar is fixed toV the rear end of a pair of arms 57 that are lined at their forward ends to a shaft 5S. This shaft is journaled on a pair of lugs 59 hxed to the forwrijrd. end of the base ll and a spring 6() coiled about the shaft is 'arranged'to hold the actuator bar 56 nornially in uplifted position against a stop (il (see Fig. 4). The actuator bar is oper'- ated by a magnet 62 mounted in horizontal position in. the forward part of the hase 1l and the armature 53- of which is connected hy a link 64 to aboli-crank 65. This bellcrank is pivoted on a lug 6G iixed to the forward part of' the base l1 and is connected by a link G7 to one of the arms 57 whereon the actuator bar is mounted. A set of connectors are arranged to couple any of the keys of the machine, except the shift-keys il, to the connnon actuator'. These connectors are preferably in the forni of links 68 that pivotally engage clips G9 fixed to the forward ends of the keys 1G. A spring 70 is coiled'ahout a stud 7l on the side of each key and engages the corresponding connector link and normally holds it with its lower end against a transverse bar 72 that extends between and is lixed to the side of the tyl e- .writer frame l0. The connector links extend downwardly through openings 73 as shown 1n the typewriter frame l() and at their lower ends 'are provided with heads 7l,

each of which has a long depending finger v '75 at its rear edge that extends through a guiding comb bar 76 iixed to the cross-bar 72. As shown, the connector links are norinally out oit' engagement with the common actuator bar 56 but any one may be swung forwardly against the tension of its spring 70 until the head 74 on its lower end is brought beneath a horizontally projecting lip 77 on the upper edge of the bar 56. The heads 74 and the cross-har 72 are pro-vided with coperating inclined cani faces 78 so that, when any key is initially depressed,

the'head 74: on the corresponding connector link will be Inoved 'forwardly and brought' beneath the lip 77 on the actuator-bar The initial shift oil any key will also close the circuit' of the operating magnet 62 so that the actuator har will bc depressed to complete the inoreiuent ot any key. At the saine time, the actuator' bar moves down in front of the heads 74 on the connector links of the other' keys and locks thein against movement, so that, after one key is dc-v pressed it is impossible to depress another until the actuated key has been restored to its normal position.

The keys of the machine are arranged to control a set of switch arms 79 that are pivoted upon supports 80 at opposite sides of the base ll. lacharni carries a spring conf tact Si which arranged to'engagc one or the other of a pair of contact pins 82 located above and belmv the saine, as shown in Fig.

.1... Springs Sil engaging the switch-arms 79 tf d to lift the latter and bring the Contact springs Si into engagement with the upper contact pins 82. In the particular apparatus illustrated, vthere are six of these switch-- arnis, three on each side, and they are conthat engage t,

resales trolled by a set o six switch shiters in the form of L-bars or hails Sl that are pivoted at their ends to inwardly-projecting lugs 85 upon the `1s of the hase ll (see Fig. 4). One of the side arms of each bail is extended, three being extended on one side and three on the other side as clearly shown in F ig. d. These extensions carry adjustable pins S6 e switch-arms 59. Springs 87 normally u1 iold the forward parts ot' the hails 8l againstL a pair of stop-lugs SS that are fixed to and extend inwardly from the sides of the base ll. The springs 8T are stronger than the springs 83 and the pins SG upon the rear ends of the bails normally hold the switch-arms 79 depressed with the contact springs 81 thereon in engagement with the lower set of contact pins SQ. Upon depressing the forward part of any bail against the tension of its spring 87, its rear end will be lifted and the .corresponding switchearm 79 will be 4raised by its spring 83 to bring the contact spring 8l thereon into engagement with its upper Contact pin 82. The forward, transverse parts of the switchshifting hails Se extend beneath the heads Pl upon the connector links 68 in position to he. operated thereby. The switch controlled by the outer bail is arranged to close the circuit through the actuator operating magnet 62 and each of the heads Tlis provided with a linger or tooth 89 which is arranged to engage -and operate the outer switch-shifting bail 8l. By this means, the oir` iit of the magnet 62 will be closed upon the initial depression of any of the keys, so that the actuator bar 56 will then be depressed to complete the movement of any selected key and lockthe other keys against movement.

The'switches controlled by the other hails select the different code signals or combination of impulses that are to be transmitted to the line, and these hails are selectively Opf erated by a set of charaetertype formed upon. the heads T oi' the connector links T8. These character type are thest'orm of teeth 9 0 variably arranged upon the different heads 74, so that each of the switchshiiting hails is operated by a number of the keys and type but each key and type is arranged to operate a particular combination of the switch-shifting hails so that a characteristic combination of code impulses will be transf mitted to the line. Any suitahle'means may be employed, such as a sunflower or the like, for transmitting the code combinations select-ed by the switches 8l to theA line. Preferably, however, the different characters are represented hypermutations ot' tive impulses of opposite polarity. For this purpose, the switches 8i are in the form of pole changers. The transmission to the line is preferably effected by set ci automatically acting relays as Aset, forth in my prior U, S. Letters oted on a lug 102 on the thi j;

a support 92 at the front of the base ll and i having a spring contact 93 arranged to engage a contact pin 94. A spring 95 tends to shift the switch to closed position but the switch is normally held open by an arm 9G that is fixed to and depends from the rock-shaft 58. This arm as shown, engages an adjustable pin 9T on the end of the switch arm 91 and normally holds the spring contact 93 thereon out of engagement with the Contact pin 94. ll'yhen the magnet G2 is en ergized, and the actuator bar 56 is operated, the arm 9S is moved away from the pin 97 and the spring 95 will bring the contacts 93 and Qi intoengagement to initiate the operation of the transmitter means. As set forth in Patent No. 929,603, above referred to, the circuit through the actuator magnet will remain closed until the transmission of the selected combination ot' impulses is completed, so that it is impossible by the depression of another key to cause one signal to overlap another. As soon as a selected signal is completed, the circuit of the magnet 6:2 will be opened as set forth in the patent referred to and the combined actuator and lock-out bar 5S will be returned to normal position by the spring 60 so that the next signal to be transmitted can be selected.

Then the apparatus is used for trans1nit ting, the message is printed by the operation of the type-bars eiliected by the movement of the keys 1G and actuator bar 56, the keys be ing coupled to the actuator har by the initial shift thereof. Then the apparatus is used to receive a message, electrical means arc enr ployed' for selectively connecting the actuator bar to the keys and type-bars. This electrical means comprises a set of selector magnets or solenoids 98 which are compactly arranged in rows upon the supporting plate 13. Each of the magnets or solcnoids comprises a single spool, the poles of whichare connected by a U-bar 99 or soft iron to complete the magnetic circuit. The core lo() of each selector magnet is pivoted to the horizontal arm of a beller-ank ld? that is pivor 99 of' the magnet. The upwardlyentcnding arms of the bell-crankllOl are piroted to the rear en d o a set of plungers 103 that extend forwardly through openingsin a transverse bar 104. This bar is fixed at its endsto the arms 88, as shown in Fig. 4f. The

plungers .103 are provided with headed end portions 105 that are adjustably threaded thereon and held in place by lock-nuts 106. These heads are arranged to engage the long depending fingers 75 on the rear portions ofthe heads 74 to shift the latter into engagement u ith the actuator bar 56. The plunger-s are normally held in retracted position by springs` 107 coiled about the bar and extending between the har 101 and the locknuts 1061 The circuits of the magnets 98 may be controlled by any suitable selective apparatus, such for example, as set forth in my prior U. S. Letters Patent No. 1,004,0387 September 26, 1911.' In the construction shown in said patent, the selector magnets directly operate the type bars, whereas in the present construction, as stated, they control the coupling links which connect the type bars to the common actuator 5G operated by the magnet 62. The eircuit of this magnet is arranged to be closed whenever the circuit is closed through one of the selector magnets. This could be effected, if desired, by arranging the actuator magnet in a series with all of the selector magnets, as shown for example in the U. S. Letters Patent to Himrod, ISerial 150.624,48?, dated May 9, 1899. In the present construction the actuator or printer magnet, like the actuator or printer magnet set forth in m prior U. S. Letters Patent No. 682,102, dated August G, 1907, is arranged to open the circuit of the selector magnets. For this pur-e pose, the arm 96 on the rock-shaft 58 is arranged to open an unlocking switch.' This unlocking switch comprises a switch-,arm 108 pivoted on the support 92 and having a spring contact 109 arrangedto engage a contact piu 110 (see Figs. el and 5). The spring 95 normally holds the contacts 109 and 110 in engagement but whenever the magnet 62 is operated, and the shaft rocked thereby, the arm 96 will engage a pin 111 on' the outer end of the push-arm 108 and willy move the contact spring 109 out of engagement with the contact pin 110 to open the circuit through the selector magnets 98.

The longitudinal lett-'.. r:-ipace feed of the paper carriage and its return to initial position are effected by a spring drum and selectively opera-ted pawl-andratel1et mechanisui. The spring drum 112 (see Figs. 7 and 8) is journaled upon the upper end of a post 113 that fixed to the typewriter frame 110. drum extends across the machine frame and around a guide pillley 115 journaled upon an upright 1lit on the t',\'pe.\riter frame.

Thence, the cord iextends bach and its end provided with a hook 117 that detachal'ily engages a lug;- 118 upon the carriage. A rack 119 (see Figs. 2 and 9) is fixed to the carriage and is provided with ratchet teethv which are engaged by a feed' pawl 120 and A. cord 114 coiled about the a retailning pawl 121. The retaining pawl is mounted in a socket or casing 122 that is Y 'fixed to the transversely shifting frame 28.`

A spring 123 in the socket normally presses the retaining pawl outwardly.- A pin 124i fixed tothe pawl extends through a vertical slot 125 in the side of the casing and tends to limit the vertical movement of the pawl and also to hold the s ame against twisting. The spring-pressed feed pawl 120 is pivoted to the upper end of an arm 126. This arm is fixed on the forwa'rd end of a shaft 127. lrl`he shaft 127 is journaledat its forward end in a lug 128 fixed to the transversely movable frame 28. At its rear end it is journaled in a lug 129 that is fixed to and projects laterally from the guiderod 30 of the transversely shifting frame (see Figs. 8 and 9). A spring 130,'extending loetween the pins or arms-on the rod 30 and shaft 127, normally holds the latter and the feed pawl connected thereto. inA th position shown in the drawings. Anarm 131 fixed to the Shaft 127v is provided with a T shapedhead that is held by the spring 130 into engagement with the upper end of' a shifter' rod 132. This vertical shifter rod extends through an opening in the typewriter frame 1,0 and is connected atits lower end to the armature 133 of a magnet 134 which is mounted upon the under side I of the typewriter frame 10. Whenever the magnet 134 is energized, the armature and the shifter rod 132 are raised and the .shaft 127 is rocked against the tension of, the spring 130 until the feed pawl 120 engages the next tooth on the rack 119. When the magnet is denergized the spring 130 rocks the shaft 127 back to normal position and the dog 120 moves the rack 119 and paper carriage. ahead one step. During the move ment ofthe feed pawl the carriage. is held stationary by the retainer pawl 121.

A s the carriage is fed in letter space direction by the pawl 120, the spring ofthe drum 112 is wound up or placed under tension andthe carriage is returned to initial position bythe spring drum when the feed.

and retainer pawls and 121 are-disen-A gaged fronr the rack 119. The disengagef' ment o f these pawls is-effectcd by a link 135 y which is provided at its upper end with a 'i1-shaped headearrangedto engage the pin 121 on theretainer pawl and a pin 136 fixed to the feedpawl.

v tfits upper end, the. re#v leas-ing linklfj'f'is prof'ided with av pin 137 thatv extends upwardly through the hori- Zontal arm'of an lL-sh'aped piece 138 that is fixed to an nin-ight 139 on the transversely movable frame 28.- The releasing device 135 is connected te an arm 110 .on a rockshaft 141. rl'his shaft 'is/arranged below the shaft 127 and is `iournaled 'at its ends in the lugs 128 andf129. At itslrear end, it is pro-A --vided with an offset afrn'r142 having'aT- shaped headthat engagesa vertical shifter rod 143. This shifter rod extends through an opening in the twpewriter frame 10 and is connected at its lower end to the arma* ture 144 cfa magnet 145. lV-hen this magnetis energized, the shifter rod 143 is raised to rock the shaft 141, and the pawls 120 and 121 are pulled by the. link 135 out of engagenient with the rack 119 so that the car4 riage may he returned to its initial position hy the spring drum 112.

A latch 145 is pivotd upon the vertical arm of the L-shaped piece 138 and is provided with a spring 147 which presses it against the side of the pin 137 upon the upper end of the releasingL device 135. When this device is operated to release the pawls, the spring 147 brings the latch over the upper end or' the pin 137 and holds the releasing device in shifted position and the pawls out of engagement with the carriage rack until the carriage has completely re-v turned to initial position. `At the end of 'the return movement ot' 'the carriage, Ja lug 148 adjustahly connecteed to the carriage rack 119 hy a screw 149 is arranged to engage a pin 150 upon the latch 146 and shift hacia to the position shown in the drawes so that the rock shaft 141 and releas- V"vice 135 may he returned to normal n. This return shift of 'the releasing ce is eected hy a. spring 151 (see Fig. 8). which is coiled about the front end'o the aft 141. Thev pin 137 th'en engages the i the latch 145 and holds it in poitsi'spring 147 under tension in o again loclrthe releasing device w, t islnext shifted. As soon as the 148 on the carriage raclr strikes the etch 146 to permit the return movement of the releasing device 135, the pawls 120 and 1:21 are ofcourse returned into engagement with the rack 119 hy 'their springs, and the carriage feed mechanism' is then in condition to he operated by the magnet 134 to eedthe carriage one step at a time in letter space direction. It should he noted' that the carriage feed mechanism and feeding device are .mounted upon the trans` versely movable frame, while the operating magnets 134 and 135 and Shifter rods 132 and 143 are mounted upon the main frame of the machine? By reason of the Tshaped heads, however, upon the arms 131 and 142,

'which are engaged by the upprends of liter rods 132 and 143, the shafts 127 and 141 and the feed and releasing. devices connected thereto can he properly operated in any` one ot the dierent positions of the transversely movable frame and carriage mounted thereon.

The circuit of the feed operating magnet 134 is controlled by a switch comprising an arin 152 (see Figs. 10 and 11'), which ie. pirated upon 'the under side of the type writer trarne 10. This arm carries a spring contactg'153 which is arranged to engage a contact pin 154. A coiled spring 155 engages the arm 159. and tends to shift the contact-s into engagement but the latter are normally held disengaged by a screw 156 which is carried by an arm 157 and en' grges the switch arm 152-. The arm 15T is fixed to the frame 46 whereupon the universal bar is mounted. When any key is operated, the universal har is depressed and the arm 157 and the screw 156 are moved away from the switch arm 152, so that the spring 155 can move the contact spring 153 into engagement with the Contact pin 154 to closev the circuit of the feed magnet 134. 1n this way, the carriage is advanced one step in letter-spr` te direction whenever a type-bar is operated both when the apparatus is used for transmitting and receiving. It should he noted that the magnet134 when energized, draws the feed pawl 120 hack against the tension of the spring 130 and the feeding movement of the pawl and carriage is eected hy-the spring 130vafter the mag- `net 134 denergized. 1n this way, the feeding. movement of the carriage does not occur until after the type have been operated to n'iale the impression on the paper carried by the carriage platen.

The shifting franie`51 that is connected to the space har 54, operates the universal frame 4 through the medium of the hook 55 as descriied, to thereby close the circuitof the "feed roperating magnet 134. Means are provided for coupling the space har to theactuator har 56 so that the carriego may he advanced one step, either when transmitting or receiving, to leave spaces between words. For this purpose, the space ing frame 51 (see Figs. 1 and '6) is connected by a lirlr 158 to an arm 159 upon one end of a rock-shaft 160. This rock-shaft is journaled in lugs secured to the inneiace of the front portion of the typewriter lframe 10. The opposite end of this shaft 'is provided with a rearwardly-projecting arm 161 which carries one of the-connector linlrs 68 so that the space har, like the keys 16, can

he coupled to the actuator har 56. The connector linlr of the space har is provided with a. special switch operating type which is arranged to transmit a special signall over the line. At the retaining station this specialv signal -will energize the proper selector magnet 98 to couple Athe space-har to the actuator '56,so that the carriage will he fed one space without printing.

The circuit of the magnet 145 which'controls the returnv of the carriage to' normal 'ica position is opened and closed by a switch i that is controlled by a special key 1G (see Fig. 3). The connector link 68 of this special key is provided with a rearwardly projecting lug which is arranged to engage a switch-arm 163 that is pivoted upon the under side of the typewriter Aframe 10. This switch-arm carries a spring Contact linger 161 which is arranged to engage a contact pin 165. A spring 166 engaging the svvitcharm. tends to shift the contact into engagement. The latter are, however, normally held out of engagement by the lug 16;)J on the connector link 68 of the special key 16. lVhen the apparatus is transmitting. the operation of the special key 16 vfill send a special carriage return signal over the line and will also close the switch contacts 'l-." l and at the local station to return the carriage to initial position. "When the instrument is receiving, the key 16', like the other keys of the machine, can be connected to the actuator 5 6 by the operation of the proper selector magnet 98 to etl'ect the return of the carriage to initial position. The special key 16 is cut out over the universal bar i5 as shown in Fig. 3, so that the latter is not operated thereby.

The carriage platen is provided with the usual paper-feed rolls rand guides. To effect the line-space rmovement of the platen, it is provided on one cud (see Fig. 7) with a ratchet wheel 167. An arm 168 pivoted to the shaft of the platen carries a spring paul 169 which engages the teeth of the ratchet Wheel. The louer end of the arm 168 is provided with a beveled gear segment 170 that meshes with the teeth of a gear segment 171. 'The gear segment 171 is journaled on a stud 17 2 on the carriage and is provided with an extension 173 that is pivoted to the end of a longitudinally extending shifter rod 174. This rod normally slides loosely through a clamp plate 175 as the carriage moves longitudinally back and forth upon the frame 28. The clamp 17 5 is pivoted to the end of a rod 176 Which extends through an opening in a guide lug 177 fixed to the rear guide rod 27 of rthe transversely movable frame 28. A. spring 178 holds the clamp 175 against a stop 1 7 9 fixed to the guide lug 177. lThe rod 176 is provided with a pin 180 engaging slots in the upper, forked end of a. bellcrank 181. The bell-crank is connected to the typewriter frame 10 by a universal joint comprising a knuckle 182 to which the bell# crank is pivot-ed, and a supporting lug 183 upon which the knuckle is pivoted, the pivots of the bell-crank and knuckle being at right angles to each other. The short arm of the bell-crank is engaged by a spring 184 and is connected b v a'link 185 to a lever 186, ball and socket joints being provided between the links and the parts connected thereby. The lever 186 is arranged below the top plate of the typewriter frame 10 and is pivoted upon a supporting frame bar 187 which carries a magnet 188. The lever 186 is pivotally connected to the armature '189 of this magnet.

The spring 184 normally holds the parts connected to the armature 189 in the positionshou'n in Figs. 8 and 9 with the clamp 175 against the stop 179. In this position, the shifter rod 171 is free to slide through the `clamp as the carriage moves longitudinally in letter-space direction and back to normal position. When the magnet 188 is energized. the lever 186 will be drawn down and the rod 176 will be moved longitudinally by the bell-crank 181 so as to move the' clamp 175 away from the stop 179. The springr L78 then moves the clamp 175 to an inclined position so that it will grip and shift tlu` rod 174 to oscillate the gear segments 171 and 170 and thereby rotate 'the platen lalto eifect the line-space movement of the paper thereon. As soon as the magnet iflleiinergized. the spring 184 restores ihr parts connected thereto to normal position and brings the clamp back against the stop 179. On its return movement, the clamp slides loosely over theshifter-rod 174. The pivoting of the support 182 which carries the bell-crank 181 and the ball and socket connections between the link and the parts connected thereby, permit the 'backward and forward .shift of the bellcrank with the transversely movable frame Q8 when the latter is moved from normal position for printing capitals or ligures and the line-space mechanism ma. be properly operated in any position ot the shifting frame 28 or of the carriage mounted thereon. The circuit ofthe line-space magnet 188 is controlled by a special key which 'is entirely similar to the key 16 which controls the operation of the carriage return magnetr and the key is operated in a similar manner' when the apparatus is used for transmitting` or receiving to effect the line-spacejmove mentwof the paper'vvhereon the message is written. In transmitting, the line-space movement of the platen could be mechanij cally effected if desired. In" the use of the present apparatus. however, the special key provided will be depressed to close the circuit through the magnet 188, so that at the same time a special signal will be transmitted over the line to operate the companion key of the machine at the receiving station to thereby effect 'the line-space move'- ment of the machines at the transmitting and at the receiving station.

lVhe-n the apparatus is used for transmitting, the transverse shift of the frame-28l and carriage mounted thereon for printing capitals oriigures is effected mechanically by the shift keys 41. When the apparatus is used for receiving, these shift keys are electrically operated hy a pair of magnets 190 and 191 mounted upon the under side of the typewriter frame 10. The armatures 192 of these magnets are connected by adjustable links 193 to arms 194 on a pair of rock-shafts 195. These rock-shafts are journalefl in suitable supports 196 and 197 upon the under side of the typewriter frame, and adjacent their outer ends are provided with arms 198 that are connected to the shift keys =l1 by links 199 that extend upwardly through the top plate of the typewriter fra-ine.` pair of cushion springs 200 are coiled about the links 199 and' extend he tween the top plate ofthe typewriter frame and thc shift keys 41 to hold the latter and the parts connected thereto in normal position.

Each shift key controls switch mechanism which in turn controls the transmission of the special signals over the line. For this purpose, the rock-shafts 195 are provided with a pair of arms 201 which engage the ends of a pair of switch-arms 202 that are pivotally mounted upon a support 203. These sWitcharms carry .spring contacts 20-i each of which is arranged to shift hetiveen a pair ot contact pins'205 (see Figs. G and 7). Springs 206 engaging the switcharms 202, tend to hold the spring contact switches 204 into engagement with the loi-fer contact pin 205; but the arms 201 on the rock-shafts 195 holdthe switchamns 202 in the position shown in the drawings against the tension of the springs 206 and with the Contact switches 20d normally in engagement with the upper setpf contact pins 205.

The shift of the switch contacts controlled by the shift keys is arranged to effect the transmission of one special signal over the line When the key is depressed and another when the key is released and the circuits of one or the other of the'shitoperating magnets is closed by the selective apparatus when one special signal is received and is held in closed condition until the releasing signal is received. ln this Way, the shift mechanism of the machines at the transmitting and' receiving station act in unison and the operator of the machine at the transmitting station merely holds one or the other ofthe shift keys depressed as long as he desires to print capitals or figures.

' A set of switch-arms 207 are pivoted on a support 20S at the front side portion of the base 1l. These switch-arms carry spring contacts 209 which are arranged to shift between upper and lower sets of contact pins 210. Springs 211 engaging the switch-arms tend to hold the contact springs in engagement`with the upper set of contact pins. A series of cams 212 mounted on a shaft 213 are arranged to engage the switch-arms when the shaft is rotated and depress the contact springs into engagement with the lower set of contact-pins. This set of switches is arranged to connect the local and line circuits and' the circuit of the printer or actuator magnet either to the transmitting or thereceiving circuits.

The operating magnets 62, 131, 188, 19) and '191 are all preferably double spool solenoids, the armatures thereof being con nccted to cores that are movable through the spools or coils.

l lt is obvious that any suitable transmiti tingand selectin Ineans could he employed in connection Wit the apparatus herein set forth.

the invention. Y

l claim as my invention 1. In a printing telegraph apparatus, the

combination With a set of finger-keys, and a It is also obvious that changesconld loe made in the details of construction set forth Without departure from the essentials of.'

i ac set ot' variably-tcothed, switch-operating? type controlled by said keys, of 'a common' actuator forsaid keys, a set of connectors for coupling the selectedv key to said actua-2u i tor, said connectors being normally spring;`

common actuator for said'keys and Switchs. 5

operating type, and means controlled by the initial shift ofiany selected key and switch* operating type? for conpling said actuaton..

thereto.

3. Inaprinting telegraph apparatus, the

combination With a set of linger keys, a

ses

of variably-topthad,' switch-operating typeand printing mechanism actuated by saint keys, of a common actuator `tor said keys,

set of connectors for coupling said keys to i said actuator, said connectors being `norma.llyspringlield in inoperative position, and astationary cam-bar for shifting any connector to operative kposition upon the initial movement of the corresponding key.

4. ln'a printing telegraph apparatus, the combination with aset of linger keys and a. set of variably-toothed, vswitch operating type actuated by saidkeys, of a common ac* tuatorfor said keys, fai set of connector pivoted to said keysaid normally sprin heldo'ut of engagement Withfsaid' actua and means for shiftingany oifsaid connes-'i tor links into engagement with said actuator upon the initial depression o2 the correspending key.

5.. In a printing telegraph apparatus, the combinationwith a set of switch-controllin linger keys, of a common actuator for said keys, a set of connector links piyoted to said keys to swing into and out of operative relaist tion with said actuator, .springs 'normally holding said connector links in inoperatiye position, and means for positively shifting any connector link to. operative position upon the initial -movement of the corresponding key.

6. In a printing telegraph apparatus, the combination with a set of switch-controlling finger keys,"of a common actuator bar for .Said keys, connector links pivoted to said keys toswing into and out of engagement with said actuator barand a stationary cambar for positively shifting any connector linkinto engagement withv said actuator bar upon the 'initial depression of the corresponding key.

7 In a printing telegraph apparatus, the

' combination with a set of switch-controlling finger keys, of a common actuating and lock; out bar for said keys, a set of connector links pivoted to said keys and' normally spring` held out of engagement with said actuator bar, and a stationary cam 1bar for shifting any of said connector links into engagement with said actuating bar upon the initial depression of the corresponding key.`

8. In a printing 'telegraph apparatus, the

combination with a set of switch-controlling of variably-toothed, switch-operating type,

cach of said switches being directly operated by a number of said type, and each type being arranged to directly operate a different combination of switches, of a set of finger keys for shitting said switch-operating type, a common actuator for said keys and type and a set of connectors spring-held in inoperative position and controlled by the initial shift of any selected key and type for connecting said actuator thereto.

10. In a printing telegraph apparatus, the combination with a set ot' switches, anda set of Variably-toothed, vswitch-operating type, each ot said switches being operated by a number ot saidftype, and each type being arranged to operate a diilferent com# bination oil switches, of a set of finger keys for shifting said switch-operating type, a common actuator and lockfout for said keys and type, a set ot' connectors, a cam-bar lor throwing said connectors upon the initial shift of any key to couple said actuator thereto, and means controlled by the initial shift ofnny key for operating said actuator to complete the shiftof the selected key and type and to lock out the other keys and type. 11. In a printing telegraph apparatus, the combination with a set of switches, and a set of variably-toothed, switch-operating type, each of said switches being directly operated by a number of said type, and each type being arranged to directly operate a diii'erent combination of switches, of a set of finger keys for shifting said switch-operan ing type, printing mechanism operated by said keys, a comi'non actuator for said keys, and a set of connectors pivoted to said keys, spring-held in inoperative position and controlledV by the initial shift of any selected key for connecting said actuator thereto.

. 12. In a printing telegraph apparatus, the

combination with a set of switches, of a set of variably-toothed, switch-operating type,

each of Asaid switches being operated by a.v

combination ryvith a set of switches, of a set of variablyitbothed, switch-operating type, each of saifliwitches being operated by a number of said type and each of said type being arranged to operate a different combination of switches, of a set of finger eys, a

common actuator therefor, a set o connectors pivoted to said iinger keys and whereon said switch-operating type are mounted, springs normally holding said connectorsl and type out of engagement with said actuator, means for shifting any of said connectors and type into engagement with said actuator upon the initial shift of the corresponding key, and means controlled by the initial shift of any key 'for operating said actuator to complete the shift or' theselected key and type and locky the other keys and type against movement.

14. In a printing telegraph apparatus, the combination with a set of switches, oa'set of variably-toothcd, switch-operating type, each of said switches being operated by a number of said type and each of said type being arranged to operate a dierent combination of switches, of a setof finger keys, a common actuatortherefor, a set of connectors pivoted to said finger keys and whereon nectors and type into engagement with said mi actuator upon the. initial shift of the corresponding key, and printing mechanism opl erated by said keys.

' links into engagement with said actuator.

16. In a printing telegraph apparatus, the comiiination with printing mechanism, of a set of operating members therefor, a common actuator for said members, a series of connector links pivoted to said members to shift into and out of engagement with said actuator7 springs for normally holding said comica-tins out of engagement with said actuator, a corresponding set of plungers arranged to engage and shift said connector links into engagement with said actuator, a corresoonding set of selector magnets, one for operating each of said plungers and a magnet for operating said actuator.

1T. ln a printing telegraph apparatus, the combination with a set of printing type, of a set ot' operating members for said type, a universal actuator bar for said members, a set of connector links pivoted to said members, springs normally holding said connector links out of engagement with said actuator bar, a corresponding set ot' selector magnets, a shifter operated by each of said magnets arranged to engage and move one of said connectors into engagement with said actuator, and an operating magnet for said actuator bar.

1S. ln a printing telegraph apparatus, the

combination with a set of linger keys, of

printing mechanism and a set of transmitter switches 'ontrollcd by said keys, an actuator for said keys normally disconnected therefrom, means controlled by the initial movemeutof said keys for coupling said actuator thereto and a set of selector magnets for coupling any of said keys to said actuator.

19. ln a printing telegraph apparatus, the combination with a set of finger keys, of printing` mechanism and a set oftransmitter switches operated b v said keys, a common actuator ior said keys, a set of connectors for coupling said keys and actuator, said connectors being normally in inoperative position, means for shifting any of said connectors to operative posit-ion upon the initial depression of thc corresponding key, and a set oi selectors independent of said keys for shifting said connectors to operative position.

20. in a printing telegraph apparatus, the combination with a set of linger keys, of printing mechanism and a set or transmitter switches operated bysaid keys, acommon actuator for said keys, a set of connectors for coupling said keys and actuator, said connectors being normally in inoperative position, means :tor shifting any of said connectors to operative position upon the initial depression of the corresponding key, a set of selectors independent of said keys for shifting said connectors to operative position, a set of operating magnets for said selectors and an operating magnet for said actuator.

2l. "In a printing telegraph apparatus, the

combination with a set of linger keys, of printing mechanism and transmitter switches controlled by said keys, a universal actuating and lock-out bar for said keys, a set of connector links pivoted to said keys and normally spring-held out of engagement with said bar, means for shifting any of said connector `|links into engagement with said actuator bar on the initial movement of the corresponding key, and a set of electrically-operated selectors independent of said keys for shifting said connector links into engagementivith saidl bar.

' Q2. ln a printing telegraph apparatus, the combination with a set of linger keys, of printing mechanism and transmitter switches controlled by said keys, a universal actuating and lock-out bar for said keys, a set of connector links pivoted to said keys and normally spring-held out of engagement with said bar, a stationary cam bar for shifting any of said connectors into engagement with said actuator liar, a set of selectors independent of said keys for shifting any oi said selectors into engagement with said bar, a set of magnets for operating said selectors and a magnet for operating said actuator bar.

In a printing telegraph apparatus, the combination with printing mechanism and selector magnets controlling the operation thereof, of a carriage, a transversely movable frame wher-con the carriage is mounted, spring mechanism for returning said carriage to initial posit-ion, paivl andratchet mechanism mounted on said frame and carriage for feeding the latter longitudinally against the pull of said spring mechanism, means for releasing said paivl and ratchet mechanism, and a pair of operating magnets for said feed mechanism and said releasing means.

24. In a printing telegraph apparatus, the combination with printing mechanism and selector magnets controlling the operation thereof, of a carriage, a transversely movable frame uliereon the carriage is mounted, a spring drum connected to said carriage for returning the same to initial position, a feed rack on said carriage, feed and `retaining fio pawls'mountedon saiditransversely movable `raine and engagingv said rack, .operating v means for said feed pawls, releasing means for disengaging said pavvls fromrisaidf-rack, said operating and releasing means 'rbeing v mounted on said movable frame'and a] pair "of magnets mounted on the main fixed frame 'of the machine arranged to actuate said operating and said releasing means respectively. n

25. 'Inv a printing telegraph apparatus, the

4combination with printing mechanism and "selector magnets controlling the operation thereof, of a carriage, a transversely movable frame whereon the carriage ismounted, al spring drum connected to said carriage for returning the same to initial position, a feed rack on said carriage, feed and retaining pawls mounted on said transversely movable frame and engaging said rack, a pair4 of spring-held rock shafts` journaled on said movable frame, operating connections, be-4 tween one of said shafts and saidieed pawl, a releasing shifterfor said feed and retaining pawls connected to the other of said shafts, a pair ofv arms on said shafts, a. pair tion, a rack fix'ed to said carriage, feed and retainer -pawls engaging said rack,'a releasing shifter for disengaging said pawls from said rack, operating magnets for said feed pawl and said releasing shifter, and 'a springlatch`forholdingusaid pawls in disengaged position, said ca'rriage having" a'lug for releasing said latch 'te permit the reengagement of said pawls with said rack.

27. In a printing telegraph apparatus, the combination with printing mechanism and selector magnets controlling the same, of `a A longitudinally movable carriage, .a paper platen journaled on saidcarriage, a linespace feed for vsaid platen, a longitudinal rod connected to said line-spacev feed, 'an

loperating shifter having a clamp for gripping sai rod,a stop vfor normally holding said clampin dijsengaging position and a magnet for operating said shifter.

28. In ajprinting Atelegraph apparatus,

the combination with printing mechanism and al series of selector magnets controlling the same, of a longitudinallylmovable' carriage, a transversely shiftable frame Whereon said carriage'is mounted, aplaten journaledV on said carriage,`a line-space feedfor saidplaten, alongitudinal rod connect-y ,ed "to ,saidr line-space feed, an yoperating shifterfconnected tol thev mainl frame ofA thel machine by a universal joint, a spring-held,

pivoted cla-mpfon said shifter arranged to v grip said rod, a fixedstop for normally holding said clamp in disengaged position, and a magnet mounted on the main .frame of the machine andhavingfan armature connectedy to said shifter. l

29. In a printing telegraph apparatus, the combination with a printing mechanism, of linger keys and a set of selector magnets for operating said printing mechanism in transmitting and receiving respectively, a set of transmitter switches controlled by said iingei' keys, 'a carriage, a transversely shiftable frame Whereon said carriage is longitudinally movable, a shift key for moving said frame, a magnet for shifting said frame, and

a special transmitting switch controlled by v said shift key.

30. In a printing telegraph apparatus, the combination vv'itha printing mechanism, of

-iinger keys and a set of selector magnets for A'operating said printing mechanism in transmitting and receiving respectively, a carriage, a transversely shiftable frame whereon said carriage is longitudinally movable,

said frame being normally held in centralv position, a pair of shift' keys, means operated by said keys for shifting said frame and i said'carriage transversely in opposite directions from normal, a pair of magnets having armatures connected to said shifting l means to move said'carriage frame in opposite directions, set of-transmitter switches controlled by. said finger keys, and special transmitter switches controlled by saidsh'ift keys' 31. In' a printing telegraph apparatus, vthe a series of iinger keys and a series of selector ,l magnets for controlling said printing mechanism in transmitting and receiving respeciQo Y 'combination with `a printing mechanism, of l tively, a setof transmitter switches con-A i trolled by said finger keys, a. shift key for said printing mechanism, and a special transmitter switch controlled by said shift key. i

v CHARLES L. KRUM. Witnesses:

HARRY L. CLAPP R. J. DOUGLAS, Jr. 

